Controlling-spout for granulated material



(No Model.)

J. W. GRISWOLD. v CONTROLLING SPOUT FOR GRANULATED MATERIAL.

Patented Feb. 16,1892.

' llVl/E/VTOR escape of grain.

front of the opening 0 is the spout or nozzle erative for the same reason.

' UNITED STATES ATENT OFFICE.

JOHN IVOOL GRISIVOLD, OF TROY, NEIV YORK.

CONTROhLlNG-SPOUT FOR GRANULIATED MATERIAL.

' SPECIFICATION forming part of Letters Patent No. 468,870, dated February 16, 1892.

Application filed June 15, 1891- To all whom it may concern.-

Be it known that I, JOHN WOOL GRIswoLD, of Troy, Rensselaer county, New York, have invented a new and useful Improvement in Controlling-spouts for Granulated Material, of which the following is a specification.

It is well known that much difficulty is experienced in controlling the outflow of dry granulated substances-such as grain, gravel, sand, &c.-from ducts or reservoirs. Ordinarily a valve or slide is arranged to move transversely across the channel .or dischargeopening; but this is easily choked and clogged by the dry material. Valves which swing on pivots are even more liable to become inop- My present invention is a simple device which does away with valves or slides entirely, and which depends for its operation upon the principle that dry granulated material while flowing under the influence of gravity with great freedom will not obey the laws of liquids and rise to its own level. Hence if said material be flowing down a pipe or channel the nozzle or spout of which is turned downward it is necessary simply to turn that spout or nozzle upward to stop the flow. My present device is an embodiment of this principle, which I have found to be operative and useful under conditions of actual employment.

In the accompanying drawings, Figure 1 is a vertical section of my device on the line 1 l of Fig. 3. Fig. 2 is a similar section showing the rotary spout turned upward to prevent Fig. 3 is a face view. Fig. 4 is a face view of the flange on the spout, showing the recesses therein. Fig. 5 is an enlarged sectional view of the latch, and Fig. 6 is a section on the line 6 6 of Fig. 4:.

Similar letters of reference indicate like parts.

A represents a reservoir for granulated material-such as grain, sand, gravel, or like substances. The front wall B is here shown as vertical and has an escape-opening at G. The rear wall B is inclined. Disposed in D, which is bent or curved at an angle, preferably at right angles, and is provided with a flange E. Bolted to the wall B are two semicircular plates F, whichare shouldered or Serial No. 396,264- (No model.)

flanged to receive the flange E. By this means the spout D is held in place before the opening 0. The spout D may be rotated freely, so that its delivery end may be turned upward, as shown in Fig.2, or downward, as shown in Fig. 1. A handle G is secured to the spout D to enable the latter to be conveniently turned.

In the flange E are formed two recesses I-I, having beveled or inclined edges, as shown in Fig. 6. Passing through one semicircular plate F is a pin I, which is "received in an exterior casing J. In said casing is a spiral spring K, which acts upon a collar L fast upon pin I and tends to throw said pin inwardly. The pin I acts as a latch to enter one or the other of the recesses II, in order to prevent the spout D from turning after it is placed in either of the positions shown in Figs. 1 and 2, the end of the pin normally pressing against the face of the flange slides down the beveled edge of the recess II when the latter comes in front of it. The pin is of course withdrawn from the recess when the spout is to be turned.

hen the spout is in the posit-ion shown in Fig. 1, the grain or other material will freely flow through it. hen it is rotated into the position shown in Fig. 2, the grain will be prevented from escaping.

I find in practice that this device Works with great ease and efficiency, and is in every way superior to valves, slides, and other analogous contrivances which, being arranged within the channel, are easily clogged and so rendered inoperative.

1. In combination with a reservoir or duct for dry granulated material having a lateral discharge-opening through which said mate m for granulated inaterial having a lateral discharge-opening, a curved or bent spout D, having a flange E and applied to said opening, holding-plates F, receiving said flange and allowing said spout to rotate, and a latch I, en-

gaging with recesses in said flange, snbstam tially as described.

JOHN XVOOL GRISWOLD. Witnesses;

ALLEN N. SMITH, HENRY W'. SMITH. 

